The HUSAR Bioinformatics Lab at DKFZ provides a large number of freely available APIs. Many of these are useful in aligning DNA, RNA, or protein sequences. Alignments can be pairwise or multiple, local or global. Some of the APIs help visualize sequences or alignment results. Others edit biological sequences to make them more comprehensible to researchers.
One large group of APIs is dedicated specifically to working with nucleic acid sequences. Some analyze sequence composition or codon usage, while others locate specific genes, motifs, or CpG islands within a sequence. One group of these APIs focuses on translating DNA sequences to proteins and vice versa. A handful of others focus on working with sequence profiles. Still more look for primers, repeats, restriction sites, or transcription factors. A few others allow the user to play with sequence mutations.
Yet another group of APIs works exclusively with proteins. A few APIs in this category focus on identification and profiling. There are some that assess secondary and tertiary structure, while others focus on determining protein composition and motifs. A couple are designed to simulate mutations in proteins.
A handful of miscellaneous APIs provide background information on sequences, alignment methods, available databases, and other relevant subjects. One simply returns the current EMBOSS version number.
All of HUSAR's services are based on EMBOSS freeware and possess their own individual WSDL endpoints.